Boiler cleaner



L. J. BAYER BOILER CLEANER May 5, 1931.

Filed Dec. 31, 1928 A/vE/Vroz- LEO Jo f/A 5A YER.

Patented May 5, 1931' UNITED STATES PATENT. OFFICE riioaornv ianYnR, or s'r. LOUIS, MISSOURI BOILER CLEANER Application filed December 31, 1928. Serial No. 329,452.

open the valve and rotate the tube to direct the cleaningfluid to the boiler tubes that are to be cleaned.

Heretofore it has been the general practise to have a valve independent of the blower tube and operatively associated therewith so that on commencing the cleaning operation the valve would first be opened and then the tube rotated through interconnecting gears and cams or similar mechanical devices. It is the object of this invention to simplify the structure of the operating head by providing a steam tight casing for the outer end of the tube and forming openings in the casing and the tube which 7 may be brought into registering relation by an initial rotation of the casing, and also providing engaging formations on the casing so and tube so that the tube will be rotated with the casing after the said openings have been put into communication. It is the further object to provide a simple construction of the head which in addition to being of a small cost is compact and ruggedand contains but few working parts. Other advantages will be better apparent from a detailed description of the invention in connection with the accompanying drawings, in which: Figure 1 is a vertical longitudinal section through a part of a boiler wall showing my improved cleaner for the boiler tubes mounted in the wall, a part of the tube being shown in section; Fig. 2 is a vertical longitudinal middle section through the operating head 7 and the end of blower tube associated therewith; Fig. 3 is avertical transverse section taken on the line 3-3 of Fig. 2; and Fig. 4

is a vertical transverse section taken on the 5;} l ne 4-4: of Fig. 2.

Referring to the drawings, W represents 1 one Wall of a boiler B having the usual tubes T. An opening 0 is provided in the wall W I and a sleeve S is fitted into said opening, said sleeve having an outer flange a to which is bolted, or otherwise secured, a housing -1 having formed within it a pair of spaced annular bearings 2, 2, and having projecting upwardly from its outer surface a pair of spaciedbearing standards 3, 3. In the end wall 4 of the'housing 1" is an opening 5, and a flanged hollow leg 6 projects from the bottom cylindricalwall of the housing for the purpose of receiving the steam supply pipeor riser 7' r A-cylindrical casing 8 is mounted within the housing 1 and rotatably supported in the bearings 2, 2, the outer end ofthe casing 8 having a stub shaft 9 projecting from it and traversing the opening 5 in the end wall ofhousing 1. A stuflingbox 10 is fitted around the shaft 9 and attached to end wall of casing 1 so as to make a steam tight joint between the shaft 9 and the opening; A cylindrical socket 11 is formed in the inner end of stub shaft 9 to receive a boss 12 formed on the closed end13 ofa blower tube 14, said blower pipe. being rotatable within the casing 1 and having a steam inlet opening 15 in alinement with a steam inlet .openmg 16 formed in casing 8. The bearings 2, 2

forln an annular passageway 17 around itli'e casing 8 so that when the main valve (not shown) in the riserf7 is opened, this annular passageway 17 will be filled with steam. In order to prevent undue leakage of steam from the clearance necessarybetween the tube14 and casing 8, two sets of packingrings 18, 18 are provided, one set of three-rings being provided on each side of the inletopenings 1 A shaft 1 9 is mounted in bearings 3, 3, said shaft having a pinion 20 fixed to it in front of said bearings and having a chain wheel 21 fixed to its forward extremity over which is passed the chain 22. A gear 23 is fixed t0 'stub shaft 9 and is in mesh with pinion 21 so that on operating the chain22 to rotate wheel 21, the pinion21 will'drive the gear 23 and rotatesmbfsha t -9. tog ther with-t e casing 8 with which it is integrally formed. An angular recess 24 is formed in the edge 25 of easing 8 and an abutment pin 26 projects from tube 14 into said recess, which is of sufficient length so that when the casing 8 is rotated to the position shown in the drawing, the inlet openings 15 and 16 will be in registering relation, and when the casing is rotated so as to bring the opposite edge of the recess in abutting relation with. pin 26, the openings15 and 16 will be out of register and the flow of steam into the tube 14 is shut off. After the operator has rotated casing 8 to admit steam to tube 14, a continued rotation of. the casing in the direction of the arrow (Fig. 3) will cause the tube 14 to be rotated by virtue of theend of recess 24 engaging pin 26, and steam will issue from tube nozzles n, n and be directed against the tubes T throughout any desired arc. After the tubes have been sufficiently cleaned a rotation of the casing 8 in the opposite direction will immediately close {the valve. and continued rotation will restore the tube 14 to its position of rest.

Having described my invention, I claim: 1. A boiler cleaner comprising an operating head and a blower pipe, said head includ ing a housing, a rotatable casing within said housing and having one end of the blower pipe nested within it, said pipe having a cleaning fluid inlet, said casing having a cleaning fluid inlet in communication with a cleaning fluid supply, the inlets of pipe and casingbeing in a'linement in a plane transverse of the casing and blowei'pipe, means for rotatingthe casing to bring said inlets "to'be mounted on the boiler wall, a pair of annular spaced bearings within said housing, a valve casing rotatably mounted in said bearings and forming with them an' annular I steam chamber, a steam inlet" leading t-osaid chamber, saidvalve casing having the outer end-of the blowerpipe rotatably mounted within it, the valve casingand theblower pipeliavingalining openings, means for-rotating the valve casing to causethe openings to be brought into registering relation for admitting steam to the blower pipe, and means for coupling the valve casing'to-the blower pipe after a predetermined'aamount 'OfIOlJfilZlOl'l ofthe casing-whereby the casing and the blower-pipe will rotate ,as a unit.

-A boiler cleaner comprising 'an-operat- Ing'headand a blower pipe associated therewith,- said head including a housing, a steam inlet leading to, said-housing, 'a valve casing rotatably amounted within saidhousing, and

. means for rotating said-valve casing-theouter end of the blower pipe being mounted within the valve casing and having rotatable connection therewith, said casing and blower pipe having alining openings adapted to be brought into communication by rotation of the valve casing, and means for rotating the blower pipe after the said openings have been brought into communication to effect the cleaning of the cleaner tubes.

4.. A boilercleaner comprising an operating head and a blower pipe, said head including-a housing having a steam chamber therein, a steam supply pipe leading to said chamber,.-a casing rotatably mounted in the steam chamber of the housing in nested relation with the outer end of the blower pipe, said casing having a steam inlet opening in communication with the steam chamber, said blower pipe having a steam inlet opening adapted for communication with the steam chamber by rotation of the casing, and means for rotating said casing.

In testimony whereof I hereunto :afiix my 

